Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Keck gives Rice $1.4M to probe quantum matter

Abstract:
The W.M. Keck Foundation has awarded Rice University $1.4 million to probe
one of the most elusive and mysterious areas of modern physics ­ the bizarre
world of high-temperature superconductors, quantum magnets, and other
solid-state materials that have "strongly correlated" electrons. Rice's
program will bring together theorists and experimentalists specializing in
both ultracold atomic matter and nanoscale condensed-matter physics.

Keck gives Rice $1.4M to probe quantum matter

HOUSTON, TX | Posted on February 12th, 2007

The W.M. Keck Foundation has awarded Rice
University $1.4 million to probe one of the most elusive and mysterious
areas of modern physics ­ the bizarre world of high-temperature
superconductors, quantum magnets, and other solid-state materials that have
"strongly correlated" electrons.

"The past decade has witnessed incredible experimental breakthroughs in both
ultracold atomic physics and condensed matter physics," said physicist Randy
Hulet, co-director of Rice's Keck Program in Quantum Materials. "We believe
Rice has all the pieces in place to make breakthroughs in our understanding
of effects that have puzzled physicists for more than 20 years."

Given the past decade's advances in nanoscale fabrication, laser cooling and
other technologies, many believe the stage is set for a major leap in our
understanding of exotic materials, such as high-temperature superconductors,
where the electrons interact so strongly with one another that their actions
cannot be explained by simple theories.

Unlike electrons in simple metals, which hardly notice one another, the
electrons in high-temperature superconductors and some magnetic materials
are intricately linked. Physicists cannot predict how any single electron in
the material will act without considering the actions of all of its
neighbors. While considerable theoretical efforts have been made, leading to
the development of major new concepts, a unified framework remains elusive
for the understanding of these strongly correlated electronic materials.

"It's the electron-electron interactions and quantum fluctuations in these
classes of materials that both create these great effects and make them so
difficult to explain," said program co-director Doug Natelson, a condensed
matter experimentalist. "In most solid-state materials, physicists can often
get away with ignoring interaction effects because they are overpowered by
stronger forces. That's just not possible in these materials." Natelson said
tunable models of these materials based on either nanostructures or cold
atoms can examine these issues directly.

For example, the advent of laser-cooling technology within the past decade
has allowed physicists working at the atomic scale to create a number of
elusive states of quantum matter, including Bose-Einstein Condensates, or
BECs, which were first predicted by Albert Einstein in the 1920s. Under the
new Keck program, Hulet's lab ­ one of the first in the world to make BECs ­
is preparing a new apparatus to test the two-dimensional Hubbard model, a
theory put forward more than 20 years ago to describe the conduction and
magnetic properties of one type of strongly interacting materials, the
high-temperature superconductors. Hulet said his apparatus will allow the
use of a gas of ultracold atoms in place of the electrons in real materials
to fine tune certain properties of the system and provide theorists with
data that they couldn't otherwise get from a real material.

Similarly, mobile electrons in ³heavy fermion² materials act hundreds of
times more massive than those in ordinary metals because of quantum
interactions with magnetic atoms. The magnetic atoms also talk to each
other. A new experiment in Natelson¹s lab will use a single-molecule
electronic device as a model of these rich materials. Dialing a voltage on
the device will controllably shift the relative importance of the
interactions, so that the system may be tuned from a normal metal state into
a quantum regime with unusual conducting properties. Studies of this quantum
phase transition in real materials have given rise to many open questions,
which the model system is uniquely suited to address.

These projects are two of several that the Keck Program will support. In
all, eight principle investigators at Rice will participate in the program.
These include condensed matter experimentalists Jun Kono and Rui-Rui Du, and
ultracold atom experimentalist Tom Killian. Theoretical connections will be
made by atomic matter theorist Han Pu and condensed matter theorists Qimiao
Si and Carl Bolech.

"Quantum magnetism and strong correlations are subjects in which theory and
experiment have always gone hand in hand over the course of studying real
condensed matter materials," said Si. "In the Keck program, theory will not
only provide the intellectual foundation but will also serve as the
intellectual glue."

Hulet and Natelson said Rice is matching Keck's contribution with $1.4
million of its own. They said the lion's share of program funds will pay the
salaries of three Keck Postdoctoral Fellows and three graduate students who
will focus exclusively on the program's projects.

####

About Rice University
Rice University is consistently ranked one of America’s best teaching and
research universities. It is distinguished by its: size—2,850 undergraduates
and 1,950 graduate students; selectivity—10 applicants for each place in the
freshman class; resources—an undergraduate student-to-faculty ratio of 6-to-1, and the fifth largest endowment per student among American universities; residential college system, which builds communities that are both close-knit and diverse; and collaborative culture, which crosses disciplines, integrates teaching and research, and intermingles undergraduate and graduate work. Rice’s wooded campus is located in the nation’s fourth largest city and on America’s South Coast.

For more information, please click here

Contacts:
Jade Boyd
713-348-6778

Copyright © Rice University

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Academic/Education

SUNY Poly NanoCollege Faculty Member Selected as American Physical Society Fellow: SUNY Poly Associate Professor of Nanoscience Dr. Vincent LaBella Recognized for Significant Technological Innovations that Enable Interactive Learning December 17th, 2014

Nanomedicine expert joins Rice faculty: Gang Bao combines genetic, nano and imaging techniques to fight disease December 17th, 2014

FEI and Oregon Health & Science University Install a Complete Correlative Microscopy Workflow in Newly Built Collaborative Science Facility December 16th, 2014

Student Nanotechnology Laboratories Network Set Up in Iran December 15th, 2014

Nanoelectronics

Stacking two-dimensional materials may lower cost of semiconductor devices December 11th, 2014

Defects are perfect in laser-induced graphene: Rice University lab discovers simple way to make material for energy storage, electronics December 10th, 2014

Nanoscale resistors for quantum devices: The electrical characteristics of new thin-film chromium oxide resistors that can be tuned by controlling the oxygen content detailed in the 'Journal of Applied Physics' December 9th, 2014

'Giant' charge density disturbances discovered in nanomaterials: Juelich researchers amplify Friedel oscillations in thin metallic films November 26th, 2014

Announcements

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Human Interest/Art

Longhorn beetle inspires ink to fight counterfeiting November 5th, 2014

Iran-Made Respiratory Nano Masks Provided to Hajj Pilgrims October 23rd, 2014

Japanese gold leaf artists worked on a nano-scale: Study demonstrates X-ray fluorescence spectroscopy is a non-destructive way to date artwork July 3rd, 2014

Harry Potter-style invisibility cloaks: A real possibility next Christmas? Forget socks and shaving foam, the big kids of tomorrow want an invisible cloak for Christmas December 19th, 2013

Grants/Awards/Scholarships/Gifts/Contests/Honors/Records

SUNY Poly NanoCollege Faculty Member Selected as American Physical Society Fellow: SUNY Poly Associate Professor of Nanoscience Dr. Vincent LaBella Recognized for Significant Technological Innovations that Enable Interactive Learning December 17th, 2014

“Line dancing bacteria win the 2014 Dolomite and Lab on a Chip Video Competition” December 16th, 2014

Lifeboat Foundation gives 2014 Guardian Award to Elon Musk December 16th, 2014

UCLA engineers first to detect and measure individual DNA molecules using smartphone microscope December 15th, 2014

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE